Display screen, terminal display screen assembly, and mobile terminal

ABSTRACT

A display screen, a terminal display screen assembly, and a mobile terminal are disclosed. The display screen may include a display module; a frame, including a first face and a second face opposite to the first face, and the display module being arranged on the first face; and a positioning structure, arranged on the second face and located around the first through hole. The first through hole has a first sidewall, the first sidewall has a first projection projected on the frame, an outer wall of the positioning structure has a second projection projected on the frame, and the second projection surrounds the first projection.

CROSS-REFERENCE TO RELATED APPLICATIONS

This is a continuation application of co-pending patent application Ser.No. 16/364,041, filed on Mar. 25, 2019, which claims priorities toChinese Patent Application Nos. 201820450899.0 and 201810277792.5, allfiled on Mar. 30, 2018, the contents of which are herein incorporated byreference in their entireties.

FIELD

The described embodiments relate to terminal technologies, and moreparticularly, to a display screen, a terminal display screen assembly,and a mobile terminal.

BACKGROUND

With the development of communication technologies, mobile terminalssuch as smart phones are becoming more and more popular. People use themobile terminal such as taking pictures, chatting, playing games.Because more and more mobile terminal functions are required, more andmore devices are mounted inside the mobile terminal. In particular, themore and more devices are mounted on one side of the mobile terminalwhere a screen is mounted. Therefore, in a case when a size of themobile terminal does not change, a display area of a display screen isoften sacrificed, so that the display area of the display screen becomessmaller.

SUMMARY

An embodiment of the present disclosure provides a display screen,including: a display module; a frame, comprising a first face and asecond face opposite to the first face, and the display module beingarranged on the first face; and a positioning structure, arranged on thesecond face and located around the first through hole. The first throughhole has a first sidewall, the first sidewall has a first projectionprojected on the frame, an outer wall of the positioning structure has asecond projection projected on the frame, and the second projectionsurrounds the first projection.

An embodiment of the present disclosure further provides a terminaldisplay screen assembly, including a display screen and an opticaldevice. The display screen includes: a display module; a frame,comprising a first face and a second face opposite to the first face,and the display module being arranged on the first face; and apositioning structure, arranged on the second face and located aroundthe first through hole. The first through hole has a first sidewall, thefirst sidewall has a first projection projected on the frame, an outerwall of the positioning structure has a second projection projected onthe frame, and the second projection surrounds the first projection. Theoptical device includes: a first optical portion; and a second opticalportion. The first optical portion is arranged in the first throughhole, the second optical portion is fixedly coupled to the positioningstructure, and the second optical portion is positioned by thepositioning structure.

An embodiment of the present disclosure further provides a mobileterminal, including a housing; and a terminal display screen assemblyarranged in the housing. The terminal display screen assembly includes adisplay screen and an optical device. The display screen defines a firstthrough hole penetrating the display screen in a thickness direction ofthe display screen, and includes: a display module; a frame, comprisinga first face and a second face opposite to the first face, and thedisplay module being arranged on the first face; and a positioningstructure, arranged on the second face and located around the firstthrough hole. The first through hole has a first sidewall, the firstsidewall has a first projection projected on the frame, an outer wall ofthe positioning structure has a second projection projected on theframe, and the second projection surrounds the first projection. Theoptical device, includes: a first optical portion; and a second opticalportion. The first optical portion is arranged in the first throughhole, the second optical portion is fixedly coupled to the positioningstructure, and the second optical portion is positioned by thepositioning structure.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to clearly illustrate the technical solutions of the presentdisclosure, the drawings used in the description of the embodiments willbe briefly described. It is understood that the drawings describedherein are merely some embodiments of the present disclosure. Thoseskilled in the art may derive other drawings from these drawings withoutinventive effort.

FIG. 1 is a structural illustration of a mobile terminal in accordancewith an embodiment in the present disclosure.

FIG. 2 is another structural illustration of a mobile terminal inaccordance with an embodiment in the present disclosure.

FIG. 3 is a partial cross-sectional view of a mobile terminal shown inFIG. 2 in section of an A-A direction.

FIG. 4 is an explored view of a mobile terminal shown in FIG. 3.

FIG. 5 is another partial cross-sectional view of a mobile terminalshown in FIG. 2 in section of an A-A direction.

FIG. 6 is a structural illustration of a display screen assembly inaccordance with an embodiment in the present disclosure.

FIG. 7 is a cross-sectional view of a display screen assembly shown inFIG. 6.

FIG. 8 is an explored view of a display screen assembly shown in FIG. 7.

FIG. 9 is a structural illustration of a display screen in accordancewith an embodiment in the present disclosure.

FIG. 10 is a structural illustration of a frame shown in FIG. 7.

FIG. 1l is another structural illustration of a frame shown in FIG. 7.

FIG. 12 is another structural illustration of a frame shown in FIG. 7.

FIG. 13 is another structural illustration of a frame shown in FIG. 7.

FIG. 14 is another structural illustration of a frame shown in FIG. 7.

FIG. 15 is another structural illustration of a frame shown in FIG. 7.

FIG. 16 is another structural illustration of a frame shown in FIG. 7.

FIG. 17 is another structural illustration of a frame shown in FIG. 7.

FIG. 18 is another structural illustration of a mobile terminal inaccordance with an embodiment in the present disclosure.

FIG. 19 is another structural illustration of a mobile terminal inaccordance with an embodiment in the present disclosure.

DETAILED DESCRIPTION

The detailed description set forth below is intended as a description ofthe subject technology with reference to the appended figures andembodiments. It is understood that the embodiments described hereininclude merely some parts of the embodiments of the present disclosure,but do not include all the embodiments. Based on the embodiments of thepresent disclosure, all other embodiments that those skilled in the artmay derive from these embodiments are within the scope of the presentdisclosure.

In the description of the present disclosure, it is to be understoodthat terms such as “center”, “longitudinal”, “lateral”, “length”,“width”, “thickness”, “upper”, “lower”, “front”, “rear”, “left”,“right”, “vertical”, “horizontal”, “top”, “bottom” “inner”, “outer”,“clockwise”, “counterclockwise”, and the like, refer to the orientationsand locational relations illustrated in the accompanying drawings. Thus,these terms used here are only for describing the present disclosure andfor describing in a simple manner, and are not intended to indicate orimply that the device or the elements are disposed to locate at thespecific directions or are structured and performed in the specificdirections, which could not to be understood as limiting the presentdisclosure. In addition, terms such as “first”, “second”, and the likeare used herein for purposes of description, and are not intended toindicate or imply relative importance or significance or to imply thenumber of indicated technical features. Thus, the feature defined with“first”, “second”, and the like may include one or more of such afeature. In the description of the present disclosure, “a plurality of”means two or more, such as two, three, and the like, unless specifiedotherwise.

In the present disclosure, unless specified or limited, otherwise, terms“mounted”, “connected”, “coupled”, and the like are used in a broadsense, and may include, for example, fixed connections, detachableconnections, or integral connections; may also be mechanical orelectrical connections; may also be direct connections or indirectconnections via intervening structures; may also be inner communicationsof two elements, as can be understood by one skilled in the artdepending on specific contexts.

In the present disclosure, unless specified or limited, otherwise, afirst feature “upper” or “lower” a second feature may include that thefirst and second features are in direct contact, and may also includethat the first and second features are not in direct contact but arecontacted by additional features between them. Moreover, the firstfeature “above”, and “upper” the second feature may include the firstfeature directly above and oblique above the second feature, or maymerely indicate that height of the first feature is greater than heightof the second feature. The first feature “below”, and “lower” the secondfeature may include the first feature directly below and oblique belowthe second feature, or may merely indicate that the height of the firstfeature is less than the height of the second feature.

The following disclosure provides many different embodiments or examplesfor implementing different structures of the present disclosure. Inorder to simplify the present disclosure, components and settings of thespecific examples are described below. Of course, embodiments are merelyexamples and are not intended to limit the present disclosure. Inaddition, the present disclosure may repeat reference numerals and/orreference numerals in different examples, which are for the purpose ofsimplicity and clarity, and do not in themselves indicate therelationship between the various embodiments and/or arrangementsdiscussed.

Moreover, the present disclosure provides examples of various specificprocesses and materials, but one of ordinary skill in the art willrecognize the use of other processes and/or the use of other materials.

It should be understood that, the “communication terminal” (alsoreferred to as “terminal”) used herein includes, but is not limited to,a device that is configured to receive/transmit communication signalsvia a wireline connection, such as via a public-switched telephonenetwork (PSTN), digital subscriber line (DSL), digital cable, a directcable connection, and/or another data connection/network, and/or via awireless interface with, for example, a cellular network, a wirelesslocal area network (WLAN), a digital television network such as a DVB-Hnetwork, a satellite network, an AM-FM broadcast transmitter, and/oranother communication terminal. A communication terminal that is set tocommunicate over a wireless interface may be referred to as a “wirelesscommunication terminal”, “wireless terminal” and/or “mobile terminal”.Examples of the mobile terminal include, but are not limited to, asatellite or cellular radiotelephone; a Personal Communications System(PCS) terminal that may combine a cellular radiotelephone with dataprocessing, facsimile and data communications capabilities; a PDA thatcan include a radiotelephone, pager, Internet/intranet access, Webbrowser, organizer, calendar and/or a global positioning system (GPS)receiver; and a conventional laptop and/or palmtop receiver or otherappliance that includes a radiotelephone transceiver.

The present disclosure provides a display screen, a terminal displayscreen assembly, and a mobile terminal, which will be described belowseparately in details. The display screen may be mounted in the terminaldisplay screen assembly, and the terminal display screen assembly may bearranged in the mobile terminal. The mobile terminal may be anelectronic apparatus such as a smart phone or a tablet computer.

The present disclosure relates to a display screen. The display screendefines a first through hole penetrating the display screen in athickness direction of the display screen, and includes: a displaymodule; a frame, comprising a first face and a second face opposite tothe first face, and the display module being arranged on the first faceand a positioning structure, arranged on the second face and locatedaround the first through hole. The first through hole has a firstsidewall, the first sidewall has a first projection projected on theframe, an outer wall of the positioning structure has a secondprojection projected on the frame, and the second projection surroundsthe first projection.

In at least one embodiment, the positioning structure extends from thesecond face of the frame in a direction from the first face towards thesecond face.

In at least one embodiment, the first sidewall comprises: a firstsub-sidewall, arranged on the display module and defining a firstsub-through hole penetrating the display module in a thickness directionof the display module; and a second sub-sidewall, arranged on the frameand defining a second sub-through hole penetrating the frame in athickness direction of the frame; wherein the first through holecomprises the first sub-through hole and the second sub-through hole,and the first sub-through hole communicates with the second sub-throughhole. The positioning structure is spaced apart from the secondsub-sidewall; or the positioning structure comprises an inner wallopposite to the outer wall, and the inner wall is connected to thesecond sub-sidewall.

In at least one embodiment, a size of the positioning structure isgradually increased from an end of the positioning structure that isaway from the second face to the other end of the positioning structurethat contacts with the second face.

In at least one embodiment, the positioning structure is fixed to thenon-display face of the display screen by a glue layer.

In at least one embodiment, the positioning structure includes aconnecting portion and a positioning portion coupled to each other, theconnecting portion is fixedly coupled to the second face, and thepositioning portion and the connecting portion are bent to each other.

In at least one embodiment, the connecting portion and the positioningportion are substantially perpendicular to each other, and thepositioning portion is adjacent to the first through hole.

In at least one embodiment, the positioning structure further comprises:a first bending portion, connected to the second face and the connectingportion; and a second bending portion, connected between the connectingportion and the positioning portion.

In at least one embodiment, the display screen further comprises atleast one of: a first plastic portion, formed on the first bendingportion; and a second plastic portion, formed on the second bendingportion.

In at least one embodiment, the display screen comprises a display areaconfigured to display a screen of the mobile terminal or configured tobe touched by a user, and the first through hole is surrounded by atleast a portion of the display area.

In at least one embodiment, the first through hole is a circular hole,and the positioning structure is an annular structure.

In at least one embodiment, the positioning structure includes aplurality of positioning blocks spaced apart from each other.

In at least one embodiment, the display screen includes a frame and adisplay module.

The frame includes a first face and a second face opposite to the firstface. The display module is arranged on the first face of the frame. Theframe is made of a metal material, the positioning structure is made ofa metal material. The positioning structure is fixedly coupled to thesecond face of the frame by welding.

The present disclosure further relates to a terminal display screenassembly. The terminal display screen assembly includes a display screenand an optical device. The display screen defines a first through holepenetrating the display screen in a thickness direction of the displayscreen, and includes: a display module; a frame, comprising a first faceand a second face opposite to the first face, and the display modulebeing arranged on the first face; and a positioning structure, arrangedon the second face and located around the first through hole. The firstthrough hole has a first sidewall, the first sidewall has a firstprojection projected on the frame, an outer wall of the positioningstructure has a second projection projected on the frame, and the secondprojection surrounds the first projection. The first optical portion isarranged in the first through hole, the second optical portion isfixedly coupled to the positioning structure, and the second opticalportion is positioned by the positioning structure.

In at least one embodiment, the positioning structure extends from thesecond face of the frame in a direction from the first face towards thesecond face.

In at least one embodiment, a distance between the first sidewall andthe first optical portion is in a range of 0.18 millimeters to 0.4millimeters.

In at least one embodiment, a size of the positioning structure isgradually increased from an end of the positioning structure that isaway from the second face to the other end of the positioning structurethat contacts with the second face.

In at least one embodiment, the positioning structure is fixed to thenon-display face of the display screen by a glue layer.

In at least one embodiment, the positioning structure includes aconnecting portion and a positioning portion coupled to each other, theconnecting portion is fixedly coupled to the second face, thepositioning portion and the connecting portion are bent to each other,and the positioning portion is fixedly coupled to the second opticalportion.

In at least one embodiment, the connecting portion and the positioningportion are substantially perpendicular to each other, and thepositioning portion is adjacent to the first through hole.

In at least one embodiment, the positioning structure further comprises:a first bending portion, connected to the second face and the connectingportion; and a second bending portion, connected between the connectingportion and the positioning portion.

In at least one embodiment, the display screen further comprises atleast one of: a first plastic portion, formed on the first bendingportion; and a second plastic portion, formed on the second bendingportion.

In at least one embodiment, the second optical portion is a cylindricalstructure, the positioning structure is an annular structure, thepositioning structure surrounds the second optical portion; and thepositioning structure is fixedly coupled to an outer face of the secondoptical portion.

In at least one embodiment, the positioning structure includes aplurality of positioning blocks spaced apart from each other, theplurality of positioning blocks surround the second optical portion; andthe plurality of positioning blocks are fixedly coupled to an outer faceof the second optical portion.

In at least one embodiment, the display screen includes a frame and adisplay module, the frame includes a first face and a second faceopposite to the first face, the display module is arranged on the firstface of the frame; and wherein the frame is made of a metal material,the positioning structure is made of a metal material, and thepositioning structure is fixedly coupled to the second face of the frameby welding.

In at least one embodiment, the optical device includes a camera module;the camera module includes a lens, a connector, and a base; the lens isarranged in the first through hole; the positioning structure is fixedlycoupled to an outer face of the connector; and the lens is mounted onthe base by the connector.

In at least one embodiment, the distance between the first sidewall andthe first optical portion is about 0.2 millimeters.

The present disclosure further relates to a mobile terminal. The mobileterminal includes: a housing; and a terminal display screen assemblyarranged in the housing. The terminal display screen assembly includes adisplay screen and an optical device. The display screen defines a firstthrough hole penetrating the display screen in a thickness direction ofthe display screen, and includes: a display module; a frame, comprisinga first face and a second face opposite to the first face, and thedisplay module being arranged on the first face; and a positioningstructure, arranged on the second face and located around the firstthrough hole. The first through hole has a first sidewall, the firstsidewall has a first projection projected on the frame, an outer wall ofthe positioning structure has a second projection projected on theframe, and the second projection surrounds the first projection. Theoptical device, includes: a first optical portion; and a second opticalportion. The first optical portion is arranged in the first throughhole, the second optical portion is fixedly coupled to the positioningstructure, and the second optical portion is positioned by thepositioning structure.

In at least one embodiment, the terminal display screen assembly is asecondary terminal display screen assembly of the mobile terminal; themobile terminal includes a main terminal display screen assemblyarranged on the housing; a display area of the main terminal displayscreen assembly is greater than a display area of the secondary terminaldisplay screen assembly; the main terminal display screen assembly isarranged on one side of the housing; and the secondary terminal displayscreen assembly is arranged on the other side of the housing opposite tothe main terminal display screen assembly.

In at least one embodiment, the terminal display screen assembly is amain terminal display screen assembly of the mobile terminal; the mobileterminal includes a secondary terminal display screen assembly arrangedon the housing; a display area of the main terminal display screenassembly is greater than a display area of the secondary terminaldisplay screen assembly; the main terminal display screen assembly isarranged on one side of the housing; and the secondary terminal displayscreen assembly is arranged on the other side of the housing opposite tothe main terminal display screen assembly.

In at least one embodiment, the housing comprises a second sidewalldefining a second through hole penetrating the housing in a thicknessdirection of the housing, and the second through hole communicates withthe first through hole; the second optical portion is fixedly connectedto the second sidewall.

In at least one embodiment, a diameter of the second through hole isgreater than a diameter of the first through hole.

The present disclosure further relates to a mobile terminal. The mobileterminal includes: a housing; and a terminal display screen assemblyarranged in the housing. The terminal display screen assembly includes:a display screen, a housing, and an optical device. The display screenincludes: a first through hole penetrating the display screen in athickness direction of the display screen; and a first sidewall locatedat a position of the first through hole, the first sidewall surroundingand defining the first through hole. The housing includes: a secondthrough hole penetrating the housing in a thickness direction of thehousing; and a second sidewall located at a position of the secondthrough hole, the second sidewall surrounding and defining the secondthrough hole. The display screen is mounted on the housing; and thefirst through hole and the second through hole extend to each other. Theoptical device includes: a first optical portion; and a second opticalportion. The first optical portion is arranged in the first throughhole, a distance between the first optical portion and the firstsidewall is about 0.4 millimeters, the second optical portion isarranged in the second through hole, and the second optical portion isfixedly coupled to the second sidewall.

FIG. 1 is a structural illustration of a front side and a back side of amobile terminal in accordance with an embodiment in the presentdisclosure. The mobile terminal 10 may include a cover plate 11, adisplay screen 12, a circuit board 13, a battery 14, a housing 15, afront camera 161, a rear camera 162, and a fingerprint unlocking module17. It should be noted that, the mobile terminal 10 may be not limitedto the above-mentioned devices, and may include other devices, or maynot include the rear camera 16, or may not include the fingerprintunlocking module 17 and the like.

The cover plate 11 may be mounted on the display screen 12, to cover thedisplay screen 12. The cover plate 11 may be a transparent glass cover,so that the display may be displayed through transparent cover plate 11.In some embodiments, the cover plate 11 may be a glass cover made of amaterial such as sapphire.

The housing 15 may define an outer contour of the mobile terminal 10. Insome embodiments, the housing 15 may include a middle frame 151 and arear cover plate 152. The middle frame 151 and the rear cover plate 152may be combined with each other to define the housing 15. The middleframe 151 and the rear cover plate 152 may define a storage space, toreceive the circuit board 13, the display screen 12, the battery 14, andthe like. In some embodiments, the cover plate 11 may be arranged tocover the middle frame 151. The rear cover plate 152 may be arranged tocover the middle frame 151. The cover plate 11 and the rear cover plate152 may be located on opposite sides of the middle frame 151. The coverplate 11 and the rear cover plate 152 may be arranged opposite to eachother.

In some embodiments, the housing 15 may be a metal housing made of ametal such as magnesium alloy, stainless steel, or the like. It shouldbe noted that, the material of the housing 15 of this embodiment in thepresent disclosure is not limited herein, and it may also adopt othermaterial. For example, the housing 15 may be a plastic housing. Also,for example, the housing 15 may be a ceramic housing. For anotherexample, the housing 15 may include a plastic portion and a metalportion, and the housing 15 may be a housing structure with metal andplastic matching to each other. Specifically, the metal portion may beformed before the plastic portion. For example, a magnesium alloysubstrate may be formed by an injection molding method, and plastic maybe molded on the magnesium alloy base to form a plastic substrate,thereby a complete housing structure may be formed.

It should be noted that, the structure of the housing of the embodimentin the present disclosure is not limited herein. For example, the rearcover plate and the middle frame may be integrally formed to form thehousing 15 structure, and the housing may directly have a storage spaceconfigured to receive the circuit board 13, the display screen 12, thebattery 14 and other devices.

The circuit board 13 may be mounted in the housing 15. The circuit board13 may be a mother board of the mobile terminal 10. The circuit board 13may be integrated with one, two or more of functional devices such as amotor, a microphone, a loudspeaker, a headphone interface, a universalserial bus interface, the front camera 161, the rear camera 162, adistance sensor, an ambient light sensor, a receiver, and a processor.

In some embodiments, the circuit board 13 may be fixed in the housing15. Specifically, the circuit board 13 may be screwed to the middleframe 151 by screws, or may be snapped onto the middle frame 151 bybuckles. It should be noted that, in embodiments of the presentdisclosure, how to fix the circuit board 13 on the middle frame 151 isnot limited herein, it may also fix in other ways, such as by snaps andscrews together.

The battery 14 may be mounted in the housing 15. The battery 14 may beelectrically coupled to the circuit board 13, to supply power to themobile terminal 10. The housing 15 may serve as a battery cover for thebattery 14. The housing 15 may cover the battery 14 to protect thebattery 14. In particular, the rear cover plate may cover the battery 14to protect the battery 14, and damages of the battery 14 due tocolliding, dropping, or the like, to the mobile terminal 10, may bereduced.

The display screen 12 may be mounted in the housing 15, and the displayscreen 12 may be electrically coupled to the circuit board 13 to definea display face of the mobile terminal 10. The display screen 12 mayinclude a display area and a non-display area. The display area may beconfigured to display a screen of the mobile terminal 10, or may beconfigured to be touched by a user to touch manipulate, or the like. Anopening may be defined in a top portion of the non-display area. Theopening may be configured to transmit sound and light. A functionaldevice such as a fingerprint module and a touch button may be arrangedon a bottom portion of the non-display area. The cover plate 11 may bemounted on the display screen 12 to cover the display screen 12. Thecover plate 11 may be defined a same display area and a same non-displayarea as the display screen 12, or may be defined a different displayarea and a different non-display area as the display screen 12.

In some embodiments, the display screen 12 may be a display screen of atype such as a liquid crystal display (LCD) screen or an organiclight-emitting diode (OLED) display screen. In some embodiments, whenthe display screen 12 is the LCD screen, the display screen 12 mayinclude a backlight module, a lower polarizer, an array substrate, aliquid crystal layer, a color filter substrate, and an upper polarizer.When the display screen 12 is the OLED display screen, the displayscreen 12 may include a base substrate, an anode layer, an organiclayer, a conductive layer, a light-emitting layer, and a cathode layer,which are sequentially stacked. In some embodiments, the display screen12 may be a transparent display screen or a non-transparent displayscreen.

It should be noted that, the structure of the display screen 12 is notlimited herein. For example, the display screen 12 may be a profiledscreen.

FIG. 2 is another structural illustration of a mobile terminal inaccordance with an embodiment in the present disclosure. The mobileterminal 20 may include a cover plate 21, a display screen 22, a circuitboard 23, a battery 24, and a housing 25. In some embodiments, thehousing 25 may include a middle frame 251 and a rear cover plate 252.The middle frame 251 and the rear cover plate 252 may be combined witheach other to define the housing 25. The mobile terminal 20 may differfrom the mobile terminal 10 in that, the display screen 22 may bedirectly defined with a light transmission area 221. For example, afirst through hole 221 may be defined in the display screen 22 andpenetrating the display screen 22 in a thickness direction, i.e., thelight transmission area may be the first through hole 221. A frontcamera, a loudspeaker, a sensor, an optical device, and the like, may bearranged in the first through hole 22, to transmit signals. The coverplate 21 may cover the first through hole 221, or may define an openingcorresponding to the first through hole.

FIG. 3 illustrates a partial cross-sectional view of a mobile terminalshown in FIG. 2 in section of an A-A direction. FIG. 4 illustrates anexplored view of a mobile terminal shown in FIG. 3. The mobile terminal20 may include an optical device 26 mounted at a position of the firstthrough hole 221.

The optical device 26 may include a first optical portion 261, a secondoptical portion 262, and a third optical portion 263. The first opticalportion 261 may be mounted on the third optical portion 263 by thesecond optical portion 262. The first optical portion 261 may be mountedin the first through hole 221. The second optical portion 262 may bepositioned by the housing 25. The third optical portion 263 may bematched with other devices. It should be noted that, in some otherembodiments, the optical device may not include the third opticalportion 263, but may include only the first optical portion 261 and thesecond optical portion 262. The first optical portion 261 may bedirectly mounted on the second optical portion 262.

In some embodiments, the optical device 26 may be a camera module. Thecamera module may be described by taking the camera as an example. Insome embodiments, the camera may include a lens, a connector, and abase, i.e., the first optical portion 261 may be the lens, the secondoptical portion 262 may be the connector, the third optical portion 263may be the base, and the lens may be mounted on the base by theconnector. In other embodiments, the camera may not also include theconnector or the base. The lens may be mounted directly on the connectoror on the base.

A lens of the camera may be at least partially received in the firstthrough hole 221. The camera may be directly integrated on the circuitboard 23, or may be electrically coupled to the circuit board 23 by asignal line. The circuit board 23 may be mounted in the housing 25. Thecircuit board 23 may be electrically coupled to the battery 24. Thecover plate 21 may be arranged on the display screen 22. The cover platemay cover the first through hole 221. The housing 25 may be referred tothe above-mentioned housing 15. The circuit board 23 may be referred tothe above-mentioned circuit board 13. The battery 24 may be referred tothe above-mentioned battery 14. Therefore, no additional description isgiven herein.

In some embodiments, the first through hole 221 may be one, two or more.The first through hole 221 may be close to an edge of the display screen22. For example, the first through hole 221 may be close to one end ofthe display screen 22. The first through hole 221 may also be close toother portions of the display screen 22. For example, the first throughhole 221 may be close a side of the display screen 22, or the firstthrough hole 221 may be close to a corner of the display screen 22, orthe first through hole 221 may be located at an intermediate portion ofthe display screen 22. The first through hole 221 may be a circular holeor a rectangular hole, and the first through hole 221 may be othershapes, such as an irregular hole.

In this embodiment in the present disclosure, the camera may realizephotographing and taking pictures by the first through hole 221, and itmay not need to arrange an additional camera on the mobile terminal. Inthis embodiment in the present disclosure, the display screen 22 maycover peripheral positions of the housing 25, compared with a cameraarranged on the non-display area at an edge of the display screen (asshown in FIG. 1), in a case when a size of the mobile terminal does notchange, the display area of the display screen may be increased.

In some embodiments, the display screen 22 may have a first sidewall 222at a position of the first through hole 221. The first sidewall 222 maysurround and define the first through hole 221. The lens may be placedin the first through hole 221. In order to protect the lens and thedisplay screen 22, the lens and the first sidewall 222 may be spacedapart from each other to maintain a safe distance, so that the lens inthe first through hole 221, and the first sidewall 222 may be preventedfrom colliding to each other. In some embodiments, a distance L1 betweenthe lens and the first sidewall 222 may be set to about 0.4 millimeters.

In an actual development process, the lens itself has tolerance. Thecamera is fixed by the housing 25, and tolerance between the housing 25and the camera exists, and the display screen has tolerance, so thattolerance chain between the lens and the first sidewall 222 is occurred,and the tolerance chain is greater. With total of each tolerance becomegreater, it is necessary to reserve a sufficient space between the lensand the first sidewall 222. The additional reserved space not onlyoccupies a display area of the display screen 22, but also increasesdiameter of the first through hole 221, so that security of the displayscreen is reduced and a black side at the position of the first throughhole 221 is increased. It affects the appearance of a display face ofthe display screen 22, and is not easy for users to use.

Therefore, in this embodiment in the present disclosure, the distance L1between the lens and the first sidewall 222 may be controlled to beabout 0.4 millimeters. In a case of no colliding between the lens andthe first sidewall 222, the diameter of the first through hole 221 maybe reduced, and the display area of the display screen 22 may beincreased.

In some embodiments, the camera may be positioned by the housing 25.Specifically, a second through hole 259 may be defined in the housing25, and may penetrate the housing 25 in a thickness direction of thehousing 25. The second sidewall 258 may surround and define the secondthrough hole 259. The second through hole 259 and the first through hole221 may extend to each other. Diameter of the second through hole 259may be greater than the diameter of the first through hole 221. Thesecond through hole 259 may be a circular hole, a rectangular hole, orother shapes. When the camera is mounted, the lens of the camera may beplaced in the first through hole 221, and the connector of the cameramay be placed in the second through hole 259, and the connector may befixedly coupled by the second sidewall 258, to align the camera on thehousing 25. It should be noted that, a positioning structure may also bearranged at a position of the second sidewall 258 to further align theconnector.

It should be noted that, in a case of maintaining a safe distancebetween the lens and the first sidewall 222 to reduce the diameter ofthe first through hole 221, it is not limited to set the distance L1between the lens and the first sidewall 222 to about 0.4 millimeters.

FIG. 5 illustrates a partial cross-sectional view of a mobile terminalshown in FIG. 2 in section of an A-A direction. Difference between themobile terminal shown in FIG. 5 and the mobile terminal shown in FIG. 3is that, the camera of the mobile terminal in FIG. 5 may be positionedby the display screen 22, so that the tolerance between the housing 25and the camera to each other may be reduced. Further, the tolerancechain between the camera and the first sidewall 222 at the position ofthe first through hole 221 of the display screen 22 may be reduced, andthe tolerance between the camera and the first sidewall 222 may bereduced. In the case when a size of the lens of the camera is constant,the diameter of the first through hole 221 may be reduced, the displayarea of the display screen 22 may be increased, and the black side atthe position of the first through hole 221 may be reduced. The cameraand the display screen 22 may be assembled to each other and assembledinto a display screen assembly 200. To further describe a fixedlycoupled relationship between the camera and the display screen 22, thedisplay screen assembly 200 will be described in following.

FIG. 6 is a structural illustration of a display screen assembly inaccordance with an embodiment in the present disclosure. FIG. 7illustrates a cross-sectional view of a display screen assembly shown inFIG. 6 in section of a B-B direction. FIG. 8 illustrates an exploredview of a display screen assembly shown in FIG. 7. The display screenassembly 200 may include a cover plate 21, a display screen 22, and acamera.

The cover plate 21 may be a transparent cover. The cover plate 21 may befixedly coupled to the display screen 22 by an optical adhesive 211.

A first through hole 221 may be defined in the display screen 22 andpenetrating the display screen 22 in a thickness direction. The firstthrough hole 221 may refer to the above-mentioned first through hole221, therefore no additional description is given herein. The displayscreen 22 may have a first sidewall 222 at a position of the firstthrough hole 221. The first sidewall 222 may surround and define thefirst through hole 221. In some embodiment, referring to FIG. 9, FIG. 9is a structural illustration of a display screen in accordance with anembodiment in the present disclosure. The display screen 22 may includea display module 201 and a frame 202.

The display module 201 may be configured to display. The display module201 may have a display face and a non-display face opposite to eachother. The display module 201 may be configured to display on thedisplay face. The display face and the cover plate 21 may be arranged ina stacked manner. The display face may be arranged toward an outerdirection of the mobile terminal 20. The non-display face of the displaymodule 201 may not be configured to display. The non-display face may belocated inside the mobile terminal 20. More specifically, the frame 202may include a first face 202 a (also called as “outer face”) and asecond face 202 b (also called as “inner face”) opposite to the firstface 202 a. The non-display face of the display module 201 may bestacked on the inner face 202 b of the frame 202. The frame 202 may beconfigured to bear and protect the display module 201.

The frame 202 may be made of a metal material, or may be made ofcomposite with metal and plastic. It should be noted that, the frame 202may also be made of a plastic material or other materials. The innerface 202 b of the frame 202 and the display module 201 may be arrangedin a stacked manner. The non-display face of the frame 202 may befixedly coupled to the housing 25.

The first through hole 221 may include a first sub-through hole 2211defined in the display module 201. The first sub-through hole 2211 maypenetrate the display module 201 in a thickness direction of the displaymodule 201. The first through hole 221 may include a second sub-throughhole 2212 defined in the frame, and the second sub-through hole 2212 maypenetrate the frame 202 in a thickness direction of the frame 202. Thefirst sub-through hole 2211 and the second sub-through hole 2212 mayextend to each other to define the first through hole 221.

The first sidewall 222 may include a first sub-sidewall 2221 arranged onthe display module 201. The first sub-sidewall 2221 may be located at aposition of the first through hole 2211. The first sub-sidewall 2221 maysurround and define the first sub-through hole 2211. The first sidewall222 may include a second sub-sidewall 2222 arranged on the frame 202.The second sub-sidewall 2222 may be located at a position of the secondsub-through hole 2212. The second sub-sidewall 2222 may surround anddefine the second sub-through hole 2212.

The camera may be a type of optical device. The camera may be replacedby other optical devices, or the camera may be integrated with otheroptical devices. It should be noted that, the camera may refer to theabove-mentioned description, therefore no additional description isgiven herein.

In some embodiments, the lens of the camera may be arranged in the firstthrough hole 221, or the lens may be arranged in the first sub-throughhole 2211 and the second sub-through hole 2212. The connector of thecamera may be fixedly coupled to a positioning structure 223 on an outerface 202 a of the frame 202. The connector may be positioned by thepositioning structure 223 on the outer face 202 a of the frame 202, tofixedly couple the camera and the display screen 22.

The lens may be a cylindrical structure. The lens may also be a circularbody structure. The lens may further be a cuboid structure. It should benoted that, the structure of the lens is not limited herein. A shape ofthe first through hole 221 may be adapted to a shape of the lens.

The connector and the lens may be coupled. The connector may be acylindrical structure. The connector may also be a circular bodystructure. The connector may further be a cuboid structure. It should benoted that, the structure of the connector is not limited herein.

The base 263 may be coupled to the connector. The lens may be mounted onthe base 263 by the connector. The base 263 may be mounted inside themobile terminal 20, or may be matched with other devices, such as ahousing or the like. It should be noted that, the camera may alsoinclude only the lens and the connector, and may not include the base263, and the connector may serve as the base of the lens.

In some embodiments, a positioning structure 223 may be arranged on anouter face 202 a of the frame 202. The positioning structure 223 may befixedly coupled to the connector, to align the camera. A shape of thepositioning structure 223 may be adapted to a shape of the connector.For example, the positioning structure 223 may be a ring structure. Foranother example, the positioning structure 223 may be a cuboid structureor the like. It should be noted that, the positioning structure 223 mayalso be arranged as other structures. For example, the positioningstructure 223 may include a plurality of spaced positioning blocks. Afixedly coupled relationship of the connector may be realized by theplurality of spaced positioning blocks.

In some embodiments, the positioning structure 223 may surround thefirst through hole 221, or the positioning structure 223 may surroundthe second sub-through hole 2212. Herein, the positioning structure 223may include an outer wall 223 a and an inner wall 223 b opposite to theouter wall 223 a. The first sidewall 222 may have a first projectionprojected on the frame 202, and the outer wall 223 a may have a secondprojection projected on the frame 202. The second projection surroundsthe first projection.

The positioning structure 223 may be directly coupled to the secondsub-sidewall 2222 or may be spaced apart from the second sub-sidewall2222. In some embodiments, the positioning structure 223 may beintegrally coupled to the frame 202. Referring to FIG. 10, FIG. 10 is astructural illustration of a frame shown in FIG. 7. The positioningstructure 223 may be formed directly by extending outward from the outerface 202 a of the frame 202, or the positioning structure 223 may beformed directly by extending outward from the outer face 202 a of theframe 202 in a direction of an inner face 202 b of the frame 202 towardthe outer face 202 a. The positioning structure 223 and the secondsub-sidewall 2222 may be spaced apart from each other. The positioningstructure 223 may be set according to a size of the connector. Thepositioning structure 223 and the frame 202 may be formed by a metalmaterial injection molding method, or may be formed by welding.

FIG. 11 is another structural illustration of a frame shown in FIG. 7. Asize of the positioning structure 223 from a free end of the positioningstructure 223 to the other end of the positioning structure 223 may begradually increased. Strength of the positioning structure 223 may beincreased, to ensure strength that the positioning structure 223 may befixedly coupled to the camera. Herein, a size of the positioningstructure 223 may refer to an area of a cross section of the positioningstructure 223 taken along a plane substantially perpendicular to thesecond sub-sidewall 2222.

FIG. 12 is another structural illustration of a frame shown in FIG. 7.The positioning structure 223 may be formed by extending along thesecond sub-sidewall 2222 from the inner face 202 b of the frame 202toward the outer face 202 a of the frame 202. The positioning structure223 may include a first bending portion 2231, a connecting portion 2232,a second bending portion 2233, and a positioning portion 2234 which areintegrally and sequentially arranged.

The first bending portion 2231 may be coupled between the secondsub-sidewall 2222 and the connecting portion 2232. The connectingportion 2231 and the frame 202 may be bent to each other to form thefirst bending portion 2231. The first bending portion 2231 may be closeto the second sub-through hole 2212.

The connecting portion 2233 may be in contact with the outer face 202 aof the frame 202, and may be fixedly coupled the frame 202. For example,the connecting portion 2233 may be fixedly coupled the frame 202 by gluebonding or by welding.

The second bending portion 2233 may be coupled between the connectingportion 2232 and the positioning portion 2234. The positioning portion2234 and the connecting portion 2232 may be bent to each other to formsecond bending portion 2233. The second bending portion 2233 may be awayfrom the second sub-through hole 2212.

The positioning portion 2234 may be fixedly coupled to the connectingbody 262. The positioning portion 2234 and the connecting portion 2232may be disposed substantially perpendicular to each other, or may forman angle of less than or greater than 90 degrees with each other.

FIG. 13 is another structural illustration of a frame shown in FIG. 7. Aplastic portion 224 may be arranged on the positioning structure 223.The plastic portion 224 may be made of a plastic material. The plasticportion 224 can be formed on the positioning structure 223 by anabrasive injection molding method. The plastic portion 224 may include afirst plastic portion 2241 and a second plastic portion 2242. The firstplastic portion 2241 may be formed on the first bending portion 2231 byan injection molding method, to increase strength of the first bendingportion 2231. The second plastic portion 2242 may be formed on thesecond bending portion 2233 by an injection molding method, or thesecond plastic portion 2242 may be formed on the second bending portion2233 and the positioning portion 2243 by an injection molding method, toincrease strength of the second bending portion 2233 and the positioningportion 2234.

It should be noted that, a structure of the plastic portion 224 is notlimited herein. For example, FIG. 14 is another structural illustrationof a frame shown in FIG. 7. The plastic portion 224 may include only thefirst plastic portion 2241. The first plastic portion 2241 may be formedon the first bending portion 2231 by an injection molding method, toincrease the strength of the first bending portion 2231.

FIG. 15 is another structural illustration of a frame shown in FIG. 7.The plastic portion 224 may include only the second plastic portion2242. The second plastic portion 2242 may be formed on the secondbending portion 2233 by an injection molding method, or may be formed onthe second bending portion 2233 and the positioning portion 2243, toincrease the strength of the second bending portion 2233 and thepositioning portion 2234.

FIG. 16 is another structural illustration of a frame shown in FIG. 7.The inner wall 223 b of the positioning structure 223 may be connectedto the second sub-sidewall 2222. More specifically, the positioningstructure 223 may be formed directly by extending along the secondsub-sidewall 2222 from the inner face 202 b of the frame 202 toward theouter face 202 a of the frame 202.

It should be noted that, the positioning structure 223 may also befixedly coupled to the frame 202 in other manners. Referring to FIG. 17,FIG. 17 is another structural illustration of a frame shown in FIG. 7.The positioning structure 223 may be fixedly coupled to the frame 202 bya glue layer 225. The glue layer 225 may be made of glue. Thepositioning structure 223 may include the integrally coupled connectingportion 2235 and the positioning portion 2234. The connecting portion2235 and the positioning portion 2234 may be bent to each other. Theconnecting portion 2235 and the positioning portion 2234 may besubstantially perpendicular to each other. The connecting portion 2235and the positioning portion 2234 may be form a L-shaped structure. Theconnecting portion 2235 may be fixedly coupled to the frame 202 by theglue layer 225. The positioning portion 2234 may be fixedly coupled tothe connecting body 262 of the camera. The positioning portion 2234 maybe close to the first through hole 221, or the positioning portion 2234may be close to the second sub-through hole 2212. It should be notedthat, the connecting portion 2235 may also be fixed to the frame 202 byother manners, such as welding. It should also be noted that, thepositioning structure 223 may not include the connecting portion 2235,but may include only the positioning portion 2234.

In embodiments of the present disclosure, when the camera is mounted inthe first through hole 221 of the display screen 22, the positioningstructure 223 may align the camera, and the distance L2 between the lensof the camera and the first sidewall 222 may be in a range of 0.18 to0.4 millimeters. In an actual production process, in a case ofpreventing the lens 221 and the first sidewall 222 from colliding, thedistance L2 between the lens and the first sidewall 222 may be set toabout 0.2 millimeters. Thereby, the size of the first through hole 221may be reduced.

In embodiments of the present disclosure, the camera may be directlypositioned by the positioning structure 223 of the display screen 22, sothat the tolerance between the housing 25 and the camera to each othermay be reduced. Further, tolerance chain between the camera and thefirst sidewall 222 at the position of the first through hole 221 of thedisplay screen 22 may be reduced, and the tolerance between the cameraand the first sidewall 222 may be reduced. In the case when a size ofthe lens of the camera is constant, the diameter of the first throughhole 221 may be reduced, the display area of the display screen 22 maybe increased, and the black side at the position of the first throughhole 221 may be reduced.

It should be noted that, the structure of the display screen 22 is notlimited herein.

FIG. 18 is another structural illustration of a front side and a backside of a mobile terminal in accordance with an embodiment in thepresent disclosure. The mobile terminal 20 may differ from theabove-mentioned mobile terminal in that, the mobile terminal 20 mayinclude a main terminal display screen assembly 200 and a secondaryterminal display screen assembly 2. The main terminal display screenassembly 20 may be mounted on one side of the housing 25, and thesecondary terminal display screen assembly 2 may be mounted on the otherside of the housing 25. The main terminal display screen assembly 200and the secondary terminal display screen assembly 2 may be arranged onopposite sides of the housing 25, respectively. In some embodiments, thedisplay area in the main terminal display screen assembly 200 may begreater than the display area in the secondary terminal display screenassembly 2. In some embodiments, a first through hole 221 may be definedin the main terminal display screen assembly 200. Detailed descriptionsmay refer to the above-mentioned terminal display screen assembly 200,therefore no additional description is given herein. The secondaryterminal display screen assembly 2 may include a display screen and acover plate. The display and the cover plate may be referred to theabove-mentioned descriptions.

It should be noted that, the first through hole 221 may also be definedin the secondary terminal display screen assembly 2. Referring to FIG.19, FIG. 19 is another structural illustration of a front side and aback side of a mobile terminal in accordance with an embodiment in thepresent disclosure. The mobile terminal 200 as shown in FIG. 19 maydiffer from the mobile terminal 200 as shown in FIG. 19 in that, themain terminal display screen assembly 200 may not include the firstthrough hole 221, and the first through hole 221 may be defined in thesecondary terminal display screen assembly 2. A structure of thesecondary terminal display screen assembly 2 may be referred to theabove-mentioned descriptions, therefore no additional description isgiven herein.

The display screen, the terminal display screen assembly, and the mobileterminal according to the embodiments of the present disclosure aredescribed above in detail. Specific examples are employed in the presentdisclosure to illustrate the principles and embodiments of the presentdisclosure. The above description of the embodiments is simply made tofacilitate understanding the present disclosure. Meanwhile, one skilledin the art may make any modifications to the specific embodiments andapplication scope based on the idea of the present disclosure. In sum,the contents set forth in the present description shall not be construedas limiting the present disclosure.

What is claimed is:
 1. A display screen, defining a first through holepenetrating the display screen in a thickness direction of the displayscreen, and comprising: a display module; a frame, comprising a firstface and a second face opposite to the first face, and the displaymodule being arranged on the first face; and a positioning structure,arranged on the second face and located around the first through hole:wherein the first through hole has a first sidewall, the first sidewallhas a first projection projected on the frame, an outer wall of thepositioning structure has a second projection projected on the frame,and the second projection surrounds the first projection.
 2. The displayscreen according to claim 1, wherein the positioning structure extendsfrom the second face of the frame in a direction from the first facetowards the second face.
 3. The display screen according to claim 2,wherein the first sidewall comprises: a first sub-sidewall, arranged onthe display module and defining a first sub-through hole penetrating thedisplay module in a thickness direction of the display module; and asecond sub-sidewall, arranged on the frame and defining a secondsub-through hole penetrating the frame in a thickness direction of theframe; wherein the first through hole comprises the first sub-throughhole and the second sub-through hole, and the first sub-through holecommunicates with the second sub-through hole; wherein the positioningstructure is spaced apart from the second sub-sidewall; or thepositioning structure comprises an inner wall opposite to the outerwall, and the inner wall is connected to the second sub-sidewall.
 4. Thedisplay screen according to claim 1, wherein a size of the positioningstructure is gradually increased from an end of the positioningstructure that is away from the second face to the other end of thepositioning structure that contacts with the second face.
 5. The displayscreen according to claim 1, wherein the positioning structure comprisesa connecting portion and a positioning portion coupled to each other,the connecting portion is fixedly coupled to second face, and thepositioning portion and the connecting portion are bent to each other.6. The display screen according to claim 5, wherein the connectingportion and the positioning portion are substantially perpendicular toeach other, and the positioning portion is adjacent to the first throughhole.
 7. The display screen according to claim 5, wherein thepositioning structure further comprises: a first bending portion,connected to the second face and the connecting portion; and a secondbending portion, connected between the connecting portion and thepositioning portion.
 8. The display screen according to claim 1, furthercomprising at least one of: a first plastic portion, formed on the firstbending portion; and a second plastic portion, formed on the secondbending portion.
 9. The display screen according to claim 1, wherein thedisplay screen comprises a display area configured to display a screenof the mobile terminal or configured to be touched by a user, and thefirst through hole is surrounded by at least a portion of the displayarea.
 10. A terminal display screen assembly, comprising: a displayscreen, defining a first through hole penetrating the display screen ina thickness direction of the display screen, and comprising: a displaymodule; a frame, comprising a first face and a second face opposite tothe first face, and the display module being arranged on the first face;and a positioning structure arranged on the second face and locatedaround the first through hole; wherein the first through hole has afirst sidewall, the first sidewall has a first projection projected onthe frame, an outer wall of the positioning structure has a secondprojection projected on the frame, and the second projection surroundsthe first projection; and an optical device, comprising: a first opticalportion; and a second optical portion; wherein the first optical portionis arranged in the first through hole, the second optical portion isfixedly coupled to the positioning structure, and the second opticalportion is positioned by the positioning structure.
 11. The terminaldisplay screen assembly according to claim 10, wherein the positioningstructure extends from the second face of the frame in a direction fromthe first face towards the second face.
 12. The terminal display screenassembly according to claim 10, wherein a distance between the firstsidewall and the first optical portion is in a range of 0.18 millimetersto 0.4 millimeters.
 13. The terminal display screen assembly accordingto claim 10, wherein a size of the positioning structure is graduallyincreased from an end of the positioning structure that is away from thesecond face to the other end of the positioning structure that contactswith the second face.
 14. The terminal display screen assembly accordingto claim 10, wherein the positioning structure comprises a connectingportion and a positioning portion coupled to each other, the connectingportion is fixedly coupled to the second face of the display screen, thepositioning portion and the connecting portion are bent to each other,and the positioning portion is fixedly coupled to the second opticalportion.
 15. The terminal display screen assembly according to claim 14,wherein the connecting portion and the positioning portion aresubstantially perpendicular to each other, and the positioning portionis adjacent to the first through hole.
 16. The terminal display screenassembly according to claim 14, wherein the positioning structurefurther comprises: a first bending portion, connected to the second faceand the connecting portion; and a second bending portion, connectedbetween the connecting portion and the positioning portion; wherein theterminal display screen assembly further comprises at least one of: afirst plastic portion, formed on the first bending portion; and a secondplastic portion, formed on the second bending portion.
 17. A mobileterminal, comprising: a housing; and a terminal display screen assemblyarranged in the housing; wherein the terminal display screen assemblycomprises: a display screen, defining a first through hole penetratingthe display screen in a thickness direction of the display screen, andcomprising: a display module; a frame, comprising a first face and asecond face opposite to the first face, and the display module beingarranged on the first face; and a positioning structure, arranged on thesecond face and located around the first through hole; wherein the firstthrough hole has a first sidewall, the first sidewall has a firstprojection projected on the frame, an outer wall of the positioningstructure has a second projection projected on the frame, and the secondprojection surrounds the first projection; and an optical device,comprising: a first optical portion; and a second optical portion;wherein the first optical portion is arranged in the first through hole,the second optical portion is fixedly coupled to the positioningstructure, and the second optical portion is positioned by thepositioning structure.
 18. The mobile terminal according to claim 17,wherein the mobile terminal comprises a main terminal display screenassembly and a secondary terminal display screen assembly, and theterminal display screen assembly is a main terminal display screenassembly or a secondary terminal display screen assembly of the mobileterminal; a display area of the main terminal display screen assembly isgreater than a display area of the secondary terminal display screenassembly; the main terminal display screen assembly is arranged on oneside of the housing; and the secondary terminal display screen assemblyis arranged on the other side of the housing opposite to the mainterminal display screen assembly.
 19. The mobile terminal according toclaim 17, wherein the housing comprises a second sidewall defining asecond through hole penetrating the housing in a thickness direction ofthe housing, and the second through hole communicates with the firstthrough hole; the second optical portion is fixedly connected to thesecond sidewall.
 20. The mobile terminal according to claim 19, whereina diameter of the second through hole is greater than a diameter of thefirst through hole.